Add tests, changelog entry

CHANGELOG.md

@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## Changed
 - MastoAPI: Accept BooleanLike input on `/api/v1/accounts/:id/follow` (fixes follows with mastodon.py)
 - Relays from akkoma are now off by default
+- NormalizeMarkup MRF is now on by default
 
 ## 2022.11
 

test/pleroma/web/activity_pub/mrf/normalize_markup_test.exs

@@ -15,6 +15,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.NormalizeMarkupTest do
   this is a link with not allowed "rel" attribute: <a href="http://example.com/" rel="tag noallowed">example.com</a>
   this is an image: <img src="http://example.com/image.jpg"><br />
   <script>alert('hacked')</script>
+  <div class="wow no classes here">mean</div>
   """
 
   @expected """
@@ -25,6 +26,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.NormalizeMarkupTest do
   this is a link with not allowed &quot;rel&quot; attribute: <a href="http://example.com/">example.com</a>
   this is an image: <img src="http://example.com/image.jpg"/><br/>
   alert(&#39;hacked&#39;)
+  mean
   """
 
   test "it filter html tags" do

test/pleroma/web/activity_pub/mrf_test.exs

@@ -77,7 +77,7 @@ defmodule Pleroma.Web.ActivityPub.MRFTest do
       clear_config([:mrf, :policies], [Pleroma.Web.ActivityPub.MRF.NoOpPolicy])
 
       expected = %{
-        mrf_policies: ["NoOpPolicy", "HashtagPolicy", "InlineQuotePolicy"],
+        mrf_policies: ["NoOpPolicy", "HashtagPolicy", "InlineQuotePolicy", "NormalizeMarkup"],
         mrf_hashtag: %{
           federated_timeline_removal: [],
           reject: [],
@@ -93,7 +93,7 @@ defmodule Pleroma.Web.ActivityPub.MRFTest do
       clear_config([:mrf, :policies], [MRFModuleMock])
 
       expected = %{
-        mrf_policies: ["MRFModuleMock", "HashtagPolicy", "InlineQuotePolicy"],
+        mrf_policies: ["MRFModuleMock", "HashtagPolicy", "InlineQuotePolicy", "NormalizeMarkup"],
         mrf_module_mock: "some config data",
         mrf_hashtag: %{
           federated_timeline_removal: [],